Lecture 6 - Femoral Triangle Flashcards
What nerves make up the lumbar plexus?
Iliohypogastric, ilioinguinalm genitofemoral, lateral cutaneous nerve of the thigh, lumbosacral trunk, femoral and obturator.
How does the sciatic and gluteal nerves and vessels transition to the lower limb?
Via greater sciatic foramen.
How does the femoral nerve and vessels transition to the lower limb?
Via subinguinal space.
How does the obturator nerve and vessels transition to the lower limb?
Via obturator canal.
Where does the femoral nerve branch from and where does it supply?
Posterior divisions L2, 3, 4, it supplies the anterior thigh.
Where does the obturator nerve branch from and where does it supply?
Anterior divisions L2, 3, 4, it supplies the medial thigh.
What nerves give rise to the sciatic nerve?
Lumbosacral trunk and the scaral nerve.
What is the root of the lumbosacral trunk?
L4/5.
What is the root of the sacral nerve?
S1, 2, 3.
Where is the sacral nerve?
Posterior thigh.
What does the sacral nerve supply?
Branches supply leg and foot.
What superficial structures are around the femur?
Superficial veins and lymph nodes, cutaneous nerves and deep fascia.
What are the main superficial veins of the lower limb?
Great and short saphenous veins.
What are the accessory superficial veins of the lower limb?
Epigastric vein, circumflex iliac vein, and accessory saphenous.
What do the lateral horizontal group of the superficial inguinal nodes drain?
Drain posterior abdominal wall.
What do the medial horizontal group of the superficial inguinal nodes drain?
Medial nodes drain anterior abdominal wall and lower half anal canal.
What does the vertical group of superficial inguinal nodes drain?
Superficial lower limb.
What is the root of the lateral cutaneous branch?
T12.
What are the roots of the lateral cutaneous nerve of thigh?
L2, 3.
What are the roots of the anterior cutaneous branches of the femoral nerve?
L2, 3, 4.
What are the roots of the femoral branch of genitofemoral nerve?
L1, 2.
What are the roots of the cutaneous branch of the obturator nerve?
L2, 3, 4.
Why is the fasciae latae thickened laterally?
To form the iliotibial tract.
What does the iliac tubercle articulate with?
The anterolateral tibial tubercle.
What does the deep fascia of the lower limb do?
Helps support the femur on the tibia when standing.
What is the femoral triangle?
Triangular shape on anterior upper thigh.
What creates the roof of the femoral triangle?
Fasciae Latea, cribriform fascia, subcutaneous tissue, skin.
What passes through the saphenous hiatus?
Cribirform fascia, great saphenous vein drains to femoral vein.
What are the boundaries of the femoral triangle?
Inguinal ligament (base), sartorius (laterally) and adductor longus (medially).
What makes the floor of the femoral triangle?
Iliopsoas and pectineus.
What does the femoral triangle contain?
Femoral nerve, artery and vein.
What is the femoral sheath?
Fascia surrounding vascular structures.
What makes up the femoral sheath?
Transversalis and ilipsoas fascia, and adventitia of femoral vessels.
What is the femoral canal?
Potential space medially within femoral sheath.
What does the femoral canal contain?
Contains fat and lymphatics.
